Safety cut-off for storage lighting systems.



PATENTED NOV. 5, 1907.

APPLIOATION FILED APR. 29. 1907.

2 SHEETSSEEET 1.

PATENTED NOV. 5

R. E. BRUOKNER. SAFETY CUT-OFF FOR STORAGE LIGHTING SYSTEMS.

. APPLICATION FILED APR. 29. 1907. I

2 SHEETS-SHEET 2 mm srA rr sf PATENT oi nn on;-

.RUDOLPH E. BRUCKNER, OF MOUNT VERNON, NEW YORK, ASSIGNOR TO COMMERCIAL AOETYLENE COMPANY, OF NEW YORK N.

Y., A CORPORATION OF NEW JERSEY.

SAFETY CUT-OFF FOR STORAGE LIGHTING SYSTEMS.

No. seasvs.

Specification of Letters Patent.

Patented 1109.5, 1907.

Application filed April 29. 19Q7. Serial No. 370.796.

Teall whom it concern 1 Be it known that I, RUDOLPH' E. BRooKNEn, a citizen of the United States, residing atMount Vernon, Westchester county, New York, have invented certain new and useful Improvements in Safety Cut-Offs for Storage Lighting Systems, of which the following is a full, clear, and exact description.

My invention relates to improvements in safety cutoff apparatus for gas lighting systems,.'the idea being to prevent the escape of gas from the storage reservoir in the event of the higher low'pressure system being brokenas a result of accident.

The object of the invention is to provide a simple and effedtive means for positively accomplishing this result, which shall be so located as to prevent its being tampered with. f a

In the accompanying' drawingsl igure 1 is a conventional illustration of a gas lighting system, including a storage reservoir, a regulator and a pipe leading to and from .the latter; Fig. 2 is a relatively enlarged view, partly in section, of the cutoff for the high pressure line, together with associated parts; Fig. 3 is a cross section of the low pressure cut-off, said view being in ing the outlet.

section and showing other associated parts.

l is the main storage cylinder or tank, containing gas. 2 is a valve for the outlet from said cylinder.

3 is the high pressure line extending from the cylinder 1 to a pressure regulator 4, of any suitable construction.

5 is a low pressure line leading from the regulator 4 to the burners. I

6 is a strainer within the storage tank 1, and protect- 7 is a ball valve which is slightly smaller in size than the bore 8, in which it stands. This bore 8 is formed in the body of the valve casing between the interior of the cylinder 1 and the valve 2.

9 is a spring serving to keep the ball 7 normally unseated.

10 is the seat for the ball valve.7.

11 is the stem by which the valve 2 is operated.

1,2 is a-pin projecting from the forward end of the valve 2 toward the ball valve 7. When the valve 2 is seated, the pin 12 will impinge against the ball valve 7 and unseat the same. p

Assuming the high pressure line 3 is broken, the quick escape of gas will' cause the ball 7 to move against its seat 10, so as to positively close the outlet from ,cyl-

effectively close the outlet and prevent the escapeoi any gas. 4 When the high pressure line3 is repaired, the valve 11 may be screwed down so as to first unseat the ball valve 7, whereupon an equilibrium will be es tablished on opposite sides of the ball, so that uponagain opening'valve 2, gas will flow through the: high pressure line 3 to the regulator. Where a regulator is used, the usual low pressure line 5 extends beyond the same. Should a break occur in said low pressure line, it is obvious that the regulator 4 would not permit the escape of gas fast enough. to operate the valve 7 with certainty. To that end,'therefore, I provide a second automatic valve, as best seen in Fig. 3'. This valve is indicated. at 14 and is of the same type as the ball valve 7. This valve is, likewise normally held unseated by the spring 15. This spring may be lighter than spring9. j

16 is an automatic valve controlled by the regulating apparatus, which may be of any well-known construction. This valve is located between the valve lland I the low pressure outlet 5. In other words, this valve 14 is located on the high pressure sidelof the regulator. If a break occurs in the low pressure line 5, the valve 16 will open wide, momentarily permitting an abnormal outward flow of gas past valve 14. This will cause the ball 14 to move to the right, as viewed in Fig; 3, until it is firmly seated to prevent the further escape of gas.

14, and this is preferable in the construction shown. I

In the event of a break and the closing of valve 14 I when the repair is effected, the coupling between the high prcssureline 3 and the regulator may be broken after first closing valve 2; Valve 14 will then be unseated by spring 15. On recoupling the system and opening valve 2, normal conditions will be obtained;

In this case the passage beyond the valve 14 should'be of greater cross-sectional area than the passage around the valve? In'this respect both safetyvalvesare eisimilar arrangement.

i 17 is a felt washer which may be provided to filter the gas. v

18 is a pressure-controlled diaphragm, by which the operable valve therefor, a separate check' valve between the manually operable valve and theinterior of said reservoir,

means for normally holding' said check valve open, and means carried by the first-mentioned valve for unseating the second-mentioned valve when the first one is closed.

2. A safety-cutoff for gas storing and lighting systems,

strainer within the storage reservoir and protecting the outlet.

3. In a' gas storage and lighting system, a storage reservoir, a pipe line extending therefrom, an automatic regulating apparatusrin said pipe line arranged to reduce and maintain with substantial uniformity the pressure in that part of the line beyond said regulating apparatus, a manu ally operable valve inthe pipe line between the reservoir and regulator, and a separate check valve between the reservoir and the manually operable valve, and a second check valve between the manually operable valve and the regulator, and means for holding both of said check valves un seated during the normal operation of the apparatus.

4. In a gas storage and lighting system, a gas storage tank, a pipe line leading therefrom,,a regulator-in said pipe line and adapted to reduce and maintain at a substantially uniform pressure the gas therein beyond said regulator, a manuallyoperable valve between the storage tank and the regulator, and; means separate from said manually operable valve and between the storage tank and said regulator for automatically closing said pipe line in the event of a break beyond said automatic closer.

5. In a gas storage and lighting system, a gas storage tank, a pipe line leading therefrom, a regulator in said pipe line adapted to reduce and maintain at substantial uniformity the pressure therein beyond said regulator, a manually operable valve, and means-for automatically closing said pipe line in the event ofa break, including two check valves separate from each other and trom' said first valve.

6. In an apparatusof the character described, a gas storage reservoir, an outlet pipe, a gas pressure reducing device in said outlet pipe, a valve between said reservoir and pressure reducer, and two check valves in said pipe line, one being arranged between the pressure reservoir and the manually operable valve, the other being arranged between the manually operable valve and the pressure reducer."

RUDOLPH E. BRUCKNER. Witnesses R. C. MITCHELL, L. S. JAMES. 

